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Forum: And now for something completely different 2022-05-18, 17:07
Replies: 95
Views: 3,779
Posted By paulunderwood
Are there any hidden characters in the input...

Are there any hidden characters in the input number? This can sometimes happen when pasting web copied stuff.
Forum: And now for something completely different 2022-05-18, 15:33
Replies: 95
Views: 3,779
Posted By paulunderwood
Was your inputted number a PRP? What command...

Was your inputted number a PRP?

What command did you issue?

Maybe you should run make clean; make; sudo make install
Forum: And now for something completely different 2022-05-18, 00:49
Replies: 95
Views: 3,779
Posted By paulunderwood
FastECPP + GWNUM

The attached code can be compiled with GWNUM (after that has compiled from P95 source) in the P95 directory

Then make the change to lib/nt.c of CM (FastECCP code):

int cm_nt_is_prime (mpz_t a)...
Forum: And now for something completely different 2022-05-16, 11:09
Replies: 95
Views: 3,779
Posted By paulunderwood
I tried unsuccessfully to get a return value from...

I tried unsuccessfully to get a return value from a system call to pfgw.

Now i have written gwnum code, but have no idea where to add a link to gwnum.a when compiling through the makefile system....
Forum: And now for something completely different 2022-05-13, 18:29
Replies: 95
Views: 3,779
Posted By paulunderwood
(FactorDB)

(FactorDB)
Forum: And now for something completely different 2022-05-13, 12:55
Replies: 95
Views: 3,779
Posted By paulunderwood
One might have to type...

One might have to type 'print(fibonacci(37217)/4466041)' to avoid trucation by Pari/GP. I certainly get truncation with echo fibonacci(37217)/4466041 | gp -q but maybe it works with the -n switch on...
Forum: And now for something completely different 2022-05-11, 19:43
Replies: 95
Views: 3,779
Posted By paulunderwood
I noticed that some numbers stall the program,...

I noticed that some numbers stall the program, like (10^79-1)/9. Primo does a BPSW sanity test before ECPP.

@Serge: The 50001 digit ECPP proof is still not in the UTM database. You had better ask...
Forum: Programming 2022-05-11, 00:37
Replies: 12
Views: 434
Posted By paulunderwood
Here is a perl script. usage: perl myscript.pl...

Here is a perl script. usage: perl myscript.pl input_file worker_count > output_file

open(fh,"<",$ARGV[0]);
$count=0;
while(<fh>){$count++;}
close(fh);

open(fh,"<",$ARGV[0]);...
Forum: And now for something completely different 2022-05-10, 15:57
Replies: 95
Views: 3,779
Posted By paulunderwood
questions about mpirun ecpp-mpi

Regarding mpi, can ecpp-mpi be run on non-uniform processors on a network. Can clients drop out without affecting the server? Likewise, can clients be added at runtime?

As far as I can tell, the...
Forum: And now for something completely different 2022-05-10, 12:42
Replies: 4
Views: 87
Posted By paulunderwood
One thing you could do is to use the meta...

One thing you could do is to use the meta keywords in your page.
Forum: Programming 2022-05-10, 11:17
Replies: 12
Views: 434
Posted By paulunderwood
Windows or Linux? What is your preferred...

Windows or Linux? What is your preferred (scripting) language?
Forum: And now for something completely different 2022-05-09, 18:20
Replies: 95
Views: 3,779
Posted By paulunderwood
Perhaps EdH can give us a synopsis on how to run...

Perhaps EdH can give us a synopsis on how to run client boxes.
Forum: And now for something completely different 2022-05-09, 16:48
Replies: 95
Views: 3,779
Posted By paulunderwood
Can you run?: adduser stargate38 su...

Can you run?:

adduser stargate38
su stargate38
Forum: And now for something completely different 2022-05-09, 00:27
Replies: 95
Views: 3,779
Posted By paulunderwood
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib ...

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
export LD_LIBRARY_PATH


HTH.

Note ecpp, as opposed to ecpp-mpi, is single threaded. Your next step will be to get mpi running.
Forum: And now for something completely different 2022-05-08, 22:33
Replies: 95
Views: 3,779
Posted By paulunderwood
Even I managed to get mpirun ecpp-mpi -g -n...

Even I managed to get mpirun ecpp-mpi -g -n '(10^1031-1)/9' -c -f cert-1031 working, after downloading, compiling and installing mpfrcx-0.6.3; and configuring ecpp-mpi with the right flag to...
Forum: And now for something completely different 2022-05-08, 15:13
Replies: 95
Views: 3,779
Posted By paulunderwood
What is stopping Marcel Martin studying the...

What is stopping Marcel Martin studying the source of FastECPP to improve Primo?
Forum: And now for something completely different 2022-05-08, 03:52
Replies: 95
Views: 3,779
Posted By paulunderwood
I am sticking wih Primo for now. A) I have...

I am sticking wih Primo for now. A) I have started a couple numbers on my 3990x and B) running two numbers seems to keep all cores busy.
Forum: Flea Market 2022-05-07, 22:13
Replies: 5
Views: 5,213
Posted By paulunderwood
Viliam Furík has a Radeon VII on sale for $750...

Viliam Furík has a Radeon VII on sale for $750 USD including delivery woldwide (https://mersenneforum.org/showpost.php?p=605445&postcount=374).
Forum: And now for something completely different 2022-05-07, 15:15
Replies: 95
Views: 3,779
Posted By paulunderwood
Some entity should set up fastECPP for a...

Some entity should set up fastECPP for a proof-over-the-net. Clients could latch onto the main server. This way a 60k proof might be computed in a reasonable amount of time.
Forum: sweety439 2022-05-07, 11:12
Replies: 4
Views: 131
Posted By paulunderwood
Like me, Marcel Martin, the author of Primo,...

Like me, Marcel Martin, the author of Primo, loathes Windows. He has good reason to do so as well. You are under a delusion that someone should "update the Windows version". Get real. Install Linux....
Forum: And now for something completely different 2022-05-06, 23:33
Replies: 95
Views: 3,779
Posted By paulunderwood
Please email Andraes and ask him to make an UTM...

Please email Andraes and ask him to make an UTM submission.
Forum: And now for something completely different 2022-05-06, 23:31
Replies: 95
Views: 3,779
Posted By paulunderwood
It is 50,001 digits. My estimate for Primo is...

It is 50,001 digits. My estimate for Primo is (50001/49081)^4 = 1.077 or 7.7% longer.

I used quad channel DDR 2400MHz for R49081's certification. I guess they were using octa channel most of the...
Forum: And now for something completely different 2022-05-06, 22:05
Replies: 95
Views: 3,779
Posted By paulunderwood
An amazing feat! Such parallelism and clever...

An amazing feat! Such parallelism and clever mathematics run on some very big hardware. I take my hat off to these provers. :smile:
Forum: Miscellaneous Math 2022-05-06, 05:30
Replies: 29
Views: 1,005
Posted By paulunderwood
2^470000001 in binary is 1 followed by...

2^470000001 in binary is 1 followed by 470,000,001 zeroes. Using 64 bits per limb -- 7,343,751 limbs. How long does it take to allocate and zero (non static) memory of this many words when the speed...
Forum: And now for something completely different 2022-05-03, 19:59
Replies: 57
Views: 30,816
Posted By paulunderwood
Congrats :toot:

Congrats :toot:
Showing results 1 to 25 of 1000

 
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